reproduce (this is a W=1 build):
        git checkout 929beafbe7acce3267c06115e13e03ff6e50548a
        b4 shazam https://lore.kernel.org/r/20241109-hdmi-mode-valid-v3-3-5348c2368076@linaro.org
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/vc4/